Answer

Verified

372k+ views

**Hint:**Here we have to find out which types of triangles are always similar. First, we will define a similar triangle. Then we will check each option one by one and find which option satisfies the definition of a similar triangle.

**Complete step-by-step answer:**

Similar triangles are those whose corresponding angles are congruent and the corresponding sides are in proportion.

As we know that corresponding angles of an equilateral triangle are equal, so that means all equilateral triangles are similar.

We can’t say this for a right angle triangle as its one angle is \[{90^ \circ }\] and the other two angles can be different or similar.

Similarly, for isosceles triangles the two corresponding angles are the same but the third one is different.

There is no triangle which is termed as a reflex triangle, rather it is a type of angle. When the measure of the angle is greater than \[180^\circ \] but less than \[360^\circ \] is termed as reflex angle.

**Hence, option (C) is correct.**

**Note:**

Similar triangles are the triangles having the same shape but different sizes. The symbol used to denote the similarity of triangles is \[ \sim \]. There are many ways to determine whether two triangles are similar or not which are defined as follows:

1. If two angles of one triangle are equal to the other triangle they are similar.

2. If two sides are in the same proportion in both triangles and the angle formed by the two sides are also the same then they are similar triangles.

3. If all three sides of the two triangles are in proportion they are similar triangles.

Recently Updated Pages

The base of a right prism is a pentagon whose sides class 10 maths CBSE

A die is thrown Find the probability that the number class 10 maths CBSE

A mans age is six times the age of his son In six years class 10 maths CBSE

A started a business with Rs 21000 and is joined afterwards class 10 maths CBSE

Aasifbhai bought a refrigerator at Rs 10000 After some class 10 maths CBSE

Give a brief history of the mathematician Pythagoras class 10 maths CBSE

Trending doubts

Difference Between Plant Cell and Animal Cell

Give 10 examples for herbs , shrubs , climbers , creepers

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Name 10 Living and Non living things class 9 biology CBSE

Select the word that is correctly spelled a Twelveth class 10 english CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Write the 6 fundamental rights of India and explain in detail